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Finding the Fourth Proportional to 59,283.11, 81,878.11 and 39,868.29

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Solution

The fourth proportional to 59,283.11, 81,878.11 and 39,868.29 is: 55,063.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,283.11 : 81,878.11 = 39,868.29 : x
  2. Step 2: Convert to fraction form
    59,283.11/81,878.11 = 39,868.29/x
  3. Step 3: Cross multiply
    59,283.11x = 81,878.11 × 39,868.29
  4. Step 4: Simplify right side
    59,283.11x = 3,264,340,134.46
  5. Step 5: Solve for x
    x = 3,264,340,134.46/59,283.11
  6. Step 6: Final answer
    x = 55,063.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.